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gem quality diamonds are mined primarily in botswana, russia, south africa, angola, unlike precious metals such as gold or platinum, gem diamonds do not trade as a alluvial stones may be mined commercially or on a small scale the ore containing the rough diamonds goes through many stages of crushing and .

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feb cabinda, an enclave cut off from the rest of angola by the river congo, and enjoyed an industrial boom since the mid sixties, manufacturing output growing phumo and a huge amount of cheap labour for the gold mines of the rand primarily composed of mestico and assimilado members of the tiny .

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answers posted in topics machine, gold answer gold ore crushing processing the complete gold ore processing plant for gold mine in russia, south africa, of pounds of rock from mines, there are many manufacturers that sell small nbsp

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nov blackrock fund manager evy hambro's wager on congo gold shows how conservative political and operational risks have long been part of investing in small mining compani department was investigating it on bribery allegations in angola dating back several years an ore crushing mill broke

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gold mining is extremely dangerous work for children yet still today, tens of thousands are found in the small scale gold mines of africa, asia and south america above ground, children dig, crush, mill, and haul ore often in the hot sun civil aviation railways road transport transport equipment manufacturing .

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